Condensed Consolidated Statements of Financial Condition - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Assets
Cash and cash equivalents	$ 92,854	$ 129,509
Cash collateral pledged	9,129	8,306
Securities owned, at fair value	864,685	792,206
Receivable on derivative contracts, at fair value	41,587	49,877
Securities borrowed	0	676,100
Other investments	153,334	167,464
Receivable from brokers	115,279	84,679
Fees receivable, net of allowance	54,107	46,498
Due from related parties	26,209	26,315
Fixed assets, net of accumulated depreciation and amortization of $30,649 and $25,968, respectively	27,159	26,388
Goodwill	44,261	34,906
Intangible assets, net of accumulated amortization of $27,154 and $25,581, respectively	15,410	8,483
Deferred tax assets, net	127,736	129,400
Other assets	37,038	34,230
Consolidated Funds
Cash and cash equivalents	16,625	501
Securities owned, at fair value	19,000	0
Other investments	255,896	189,377
Other assets	657	1,437
Total Assets	1,900,966	2,405,676
Liabilities
Securities sold, not yet purchased, at fair value	250,739	207,875
Payable for derivative contracts, at fair value	26,078	41,330
Securities loaned	0	682,493
Payable to brokers	328,902	335,822
Compensation payable	101,780	134,289
Notes payable and other debt	66,628	67,144
Convertible debt	123,149	118,475
Fees payable	19,296	6,331
Due to related parties	320	474
Accounts payable, accrued expenses and other liabilities	43,683	46,606
Consolidated Funds
Due to related parties	1,000	0
Contributions received in advance	5,000	0
Capital withdrawals payable	84	864
Accounts payable, accrued expenses and other liabilities	289	222
Total Liabilities	$ 966,948	$ 1,641,925
Commitments and Contingencies
Redeemable non-controlling interests	$ 171,245	$ 86,076
Stockholders' equity
Additional paid-in capital	896,933	772,296
(Accumulated deficit) retained earnings	(5,317)	(16,027)
Accumulated other comprehensive income (loss)	13	17
Less: Class A common stock held in treasury, at cost, 32,776,819 and 23,507,656 shares as of September 30, 2015 and December 31, 2014, respectively.	(130,024)	(79,771)
Total Stockholders' Equity	762,773	677,675
Total Liabilities and Stockholders' Equity	1,900,966	2,405,676
Convertible Preferred Stock
Stockholders' equity
Preferred stock	1	0
Common Stock Class A
Stockholders' equity
Common stock	1,167	1,160
Less: Class A common stock held in treasury, at cost, 32,776,819 and 23,507,656 shares as of September 30, 2015 and December 31, 2014, respectively.	(130,024)	(79,771)
Common Stock Class B
Stockholders' equity
Common stock	$ 0	$ 0